如何将彩色字符打印到支持彩色字符的Linux终端?

如何判断终端是否支持颜色码?


当前回答

这是一个老主题,但我编写了一个类,其中包含嵌套子类和由简单C宏定义的颜色静态成员。

我在dreamincode.net中通过用户no2pencil从这篇文章中获得了颜色函数。

我这样做是为了能够像这样使用std::cout流中的静态常量:

cout << zkr::cc::fore::red << "This is red text. " 
     << zkr::cc::console << "And changing to console default colors, fg, bg."
     << endl;

类和测试程序的源代码可以在这里下载。

cc::console将重置为控制台默认颜色和属性,cc::underline将为文本下划线,这在putty上工作,我已经测试了测试程序。

颜色:

black
blue
red
magenta
green
cyan
yellow
white

lightblack
lightblue
lightred
lightmagenta
lightgreen
lightcyan
lightyellow
lightwhite

它可以用于cc静态类的前静态和后静态子类。

编辑2017

为了更实用,我在这里添加了类代码。

颜色代码宏:

#define CC_CONSOLE_COLOR_DEFAULT "\033[0m"
#define CC_FORECOLOR(C) "\033[" #C "m"
#define CC_BACKCOLOR(C) "\033[" #C "m"
#define CC_ATTR(A) "\033[" #A "m"

main color函数定义屏幕的颜色或属性:

char *cc::color(int attr, int fg, int bg)
{
    static char command[13];

    /* Command is the control command to the terminal */
    sprintf(command, "%c[%d;%d;%dm", 0x1B, attr, fg + 30, bg + 40);
    return command;
}

ccolor.h

#include <stdio.h>

#define CC_CONSOLE_COLOR_DEFAULT "\033[0m"
#define CC_FORECOLOR(C) "\033[" #C "m"
#define CC_BACKCOLOR(C) "\033[" #C "m"
#define CC_ATTR(A) "\033[" #A "m"

namespace zkr
{
    class cc
    {
    public:

        class fore
        {
        public:
            static const char *black;
            static const char *blue;
            static const char *red;
            static const char *magenta;
            static const char *green;
            static const char *cyan;
            static const char *yellow;
            static const char *white;
            static const char *console;

            static const char *lightblack;
            static const char *lightblue;
            static const char *lightred;
            static const char *lightmagenta;
            static const char *lightgreen;
            static const char *lightcyan;
            static const char *lightyellow;
            static const char *lightwhite;
        };

        class back
        {
        public:
            static const char *black;
            static const char *blue;
            static const char *red;
            static const char *magenta;
            static const char *green;
            static const char *cyan;
            static const char *yellow;
            static const char *white;
            static const char *console;

            static const char *lightblack;
            static const char *lightblue;
            static const char *lightred;
            static const char *lightmagenta;
            static const char *lightgreen;
            static const char *lightcyan;
            static const char *lightyellow;
            static const char *lightwhite;
        };

        static char *color(int attr, int fg, int bg);
        static const char *console;
        static const char *underline;
        static const char *bold;
    };
}

ccolor.cpp

#include "ccolor.h"

using namespace std;

namespace zkr
{
    enum Color
    {
        Black,
        Red,
        Green,
        Yellow,
        Blue,
        Magenta,
        Cyan,
        White,
        Default = 9
    };

    enum Attributes
    {
        Reset,
        Bright,
        Dim,
        Underline,
        Blink,
        Reverse,
        Hidden
    };

    char *cc::color(int attr, int fg, int bg)
    {
        static char command[13];
        /* Command is the control command to the terminal */
        sprintf(command, "%c[%d;%d;%dm", 0x1B, attr, fg + 30, bg + 40);
        return command;
    }

    const char *cc::console = CC_CONSOLE_COLOR_DEFAULT;
    const char *cc::underline = CC_ATTR(4);
    const char *cc::bold = CC_ATTR(1);

    const char *cc::fore::black = CC_FORECOLOR(30);
    const char *cc::fore::blue = CC_FORECOLOR(34);
    const char *cc::fore::red = CC_FORECOLOR(31);
    const char *cc::fore::magenta = CC_FORECOLOR(35);
    const char *cc::fore::green = CC_FORECOLOR(92);
    const char *cc::fore::cyan = CC_FORECOLOR(36);
    const char *cc::fore::yellow = CC_FORECOLOR(33);
    const char *cc::fore::white = CC_FORECOLOR(37);
    const char *cc::fore::console = CC_FORECOLOR(39);

    const char *cc::fore::lightblack = CC_FORECOLOR(90);
    const char *cc::fore::lightblue = CC_FORECOLOR(94);
    const char *cc::fore::lightred = CC_FORECOLOR(91);
    const char *cc::fore::lightmagenta = CC_FORECOLOR(95);
    const char *cc::fore::lightgreen = CC_FORECOLOR(92);
    const char *cc::fore::lightcyan = CC_FORECOLOR(96);
    const char *cc::fore::lightyellow = CC_FORECOLOR(93);
    const char *cc::fore::lightwhite = CC_FORECOLOR(97);

    const char *cc::back::black = CC_BACKCOLOR(40);
    const char *cc::back::blue = CC_BACKCOLOR(44);
    const char *cc::back::red = CC_BACKCOLOR(41);
    const char *cc::back::magenta = CC_BACKCOLOR(45);
    const char *cc::back::green = CC_BACKCOLOR(42);
    const char *cc::back::cyan = CC_BACKCOLOR(46);
    const char *cc::back::yellow = CC_BACKCOLOR(43);
    const char *cc::back::white = CC_BACKCOLOR(47);
    const char *cc::back::console = CC_BACKCOLOR(49);

    const char *cc::back::lightblack = CC_BACKCOLOR(100);
    const char *cc::back::lightblue = CC_BACKCOLOR(104);
    const char *cc::back::lightred = CC_BACKCOLOR(101);
    const char *cc::back::lightmagenta = CC_BACKCOLOR(105);
    const char *cc::back::lightgreen = CC_BACKCOLOR(102);
    const char *cc::back::lightcyan = CC_BACKCOLOR(106);
    const char *cc::back::lightyellow = CC_BACKCOLOR(103);
    const char *cc::back::lightwhite = CC_BACKCOLOR(107);
}

其他回答

gon1332头文件的扩展版本:

//
//  COLORS.h
//
//  Posted by Gon1332 May 15 2015 on StackOverflow
//  https://stackoverflow.com/questions/2616906/how-do-i-output-coloured-text-to-a-linux-terminal#2616912
//
//  Description: An easy header file to make colored text output to terminal second nature.
//  Modified by Shades Aug. 14 2018

// PLEASE carefully read comments before using this tool, this will save you a lot of bugs that are going to be just about impossible to find.
#ifndef COLORS_h
#define COLORS_h

/* FOREGROUND */
// These codes set the actual text to the specified color
#define RESETTEXT  "\x1B[0m" // Set all colors back to normal.
#define FOREBLK  "\x1B[30m" // Black
#define FORERED  "\x1B[31m" // Red
#define FOREGRN  "\x1B[32m" // Green
#define FOREYEL  "\x1B[33m" // Yellow
#define FOREBLU  "\x1B[34m" // Blue
#define FOREMAG  "\x1B[35m" // Magenta
#define FORECYN  "\x1B[36m" // Cyan
#define FOREWHT  "\x1B[37m" // White

/* BACKGROUND */
// These codes set the background color behind the text.
#define BACKBLK "\x1B[40m"
#define BACKRED "\x1B[41m"
#define BACKGRN "\x1B[42m"
#define BACKYEL "\x1B[43m"
#define BACKBLU "\x1B[44m"
#define BACKMAG "\x1B[45m"
#define BACKCYN "\x1B[46m"
#define BACKWHT "\x1B[47m"

// These will set the text color and then set it back to normal afterwards.
#define BLK(x) FOREBLK x RESETTEXT
#define RED(x) FORERED x RESETTEXT
#define GRN(x) FOREGRN x RESETTEXT
#define YEL(x) FOREYEL x RESETTEXT
#define BLU(x) FOREBLU x RESETTEXT
#define MAG(x) FOREMAG x RESETTEXT
#define CYN(x) FORECYN x RESETTEXT
#define WHT(x) FOREWHT x RESETTEXT

// Example usage: cout << BLU("This text's color is now blue!") << endl;

// These will set the text's background color then reset it back.
#define BackBLK(x) BACKBLK x RESETTEXT
#define BackRED(x) BACKRED x RESETTEXT
#define BackGRN(x) BACKGRN x RESETTEXT
#define BackYEL(x) BACKYEL x RESETTEXT
#define BackBLU(x) BACKBLU x RESETTEXT
#define BackMAG(x) BACKMAG x RESETTEXT
#define BackCYN(x) BACKCYN x RESETTEXT
#define BackWHT(x) BACKWHT x RESETTEXT

// Example usage: cout << BACKRED(FOREBLU("I am blue text on a red background!")) << endl;

// These functions will set the background to the specified color indefinitely.
// NOTE: These do NOT call RESETTEXT afterwards. Thus, they will set the background color indefinitely until the user executes cout << RESETTEXT
// OR if a function is used that calles RESETTEXT i.e. cout << RED("Hello World!") will reset the background color since it calls RESETTEXT.
// To set text COLOR indefinitely, see SetFore functions below.
#define SetBackBLK BACKBLK
#define SetBackRED BACKRED
#define SetBackGRN BACKGRN
#define SetBackYEL BACKYEL
#define SetBackBLU BACKBLU
#define SetBackMAG BACKMAG
#define SetBackCYN BACKCYN
#define SetBackWHT BACKWHT

// Example usage: cout << SetBackRED << "This text's background and all text after it will be red until RESETTEXT is called in some way" << endl;

// These functions will set the text color until RESETTEXT is called. (See above comments)
#define SetForeBLK FOREBLK
#define SetForeRED FORERED
#define SetForeGRN FOREGRN
#define SetForeYEL FOREYEL
#define SetForeBLU FOREBLU
#define SetForeMAG FOREMAG
#define SetForeCYN FORECYN
#define SetForeWHT FOREWHT

// Example usage: cout << SetForeRED << "This text and all text after it will be red until RESETTEXT is called in some way" << endl;

#define BOLD(x) "\x1B[1m" x RESETTEXT // Embolden text then reset it.
#define BRIGHT(x) "\x1B[1m" x RESETTEXT // Brighten text then reset it. (Same as bold but is available for program clarity)
#define UNDL(x) "\x1B[4m" x RESETTEXT // Underline text then reset it.

// Example usage: cout << BOLD(BLU("I am bold blue text!")) << endl;

// These functions will embolden or underline text indefinitely until RESETTEXT is called in some way.

#define SetBOLD "\x1B[1m" // Embolden text indefinitely.
#define SetBRIGHT "\x1B[1m" // Brighten text indefinitely. (Same as bold but is available for program clarity)
#define SetUNDL "\x1B[4m" // Underline text indefinitely.

// Example usage: cout << setBOLD << "I and all text after me will be BOLD/Bright until RESETTEXT is called in some way!" << endl;

#endif /* COLORS_h */

正如你所看到的,它有更多的功能,比如临时、无限期地设置背景颜色,以及其他功能。我也相信它对初学者更友好,更容易记住所有的函数。

#include <iostream>
#include "COLORS.h"

int main() {
  std::cout << SetBackBLU << SetForeRED << endl;
  std::cout << "I am red text on a blue background! :) " << endl;
  return 0;
}

只需在项目中包含头文件,就可以使用彩色终端输出了。

我为此写了一个跨平台的库color_ostream,支持ANSI color, 256 color和true color,你所要做的就是直接包括它,并像这样将cout改为rd_cout。

std basic color 256 color true color
std::cout color_ostream::rd_cout color_ostream::rd256_cout color_ostream::rdtrue_cout
std::wcout color_ostream::rd_wcout color_ostream::rd256_wcout color_ostream::rdtrue_wcout
std::cerr color_ostream::rd_cerr color_ostream::rd256_cerr color_ostream::rdtrue_cerr
std::wcerr color_ostream::rd_wcerr color_ostream::rd256_wcerr color_ostream::rdtrue_wcerr
std::clog color_ostream::rd_clog color_ostream::rd256_clog color_ostream::rdtrue_clog
std::wclog color_ostream::rd_wclog color_ostream::rd256_wclog color_ostream::rdtrue_wclog

这里有一个简单的例子:

//hello.cpp
#include "color_ostream.h"

using namespace color_ostream;

int main([[maybe_unused]] int argc, [[maybe_unused]] char *argv[]) {
    rd_wcout.imbue(std::locale(std::locale(),"",LC_CTYPE));
    rd_wcout << L"Hello world\n";
    rd_wcout << L"Hola Mundo\n";
    rd_wcout << L"Bonjour le monde\n";

    rd256_wcout << L"\n256 color" << std::endl;
    rd256_wcout << L"Hello world\n";
    rd256_wcout << L"Hola Mundo\n";
    rd256_wcout << L"Bonjour le monde\n";

    rdtrue_wcout << L"\ntrue color" << std::endl;
    rdtrue_wcout << L"Hello world\n";
    rdtrue_wcout << L"Hola Mundo\n";
    rdtrue_wcout << L"Bonjour le monde\n";
    return 0;
}

您需要输出ANSI颜色代码。注意,并非所有终端都支持此功能;如果不支持颜色序列,就会显示垃圾。

例子:

 cout << "\033[1;31mbold red text\033[0m\n";

这里,\033是ESC字符,ASCII 27。它后面跟着[,然后是0个或多个用;隔开的数字,最后是字母m。这些数字描述了从这一点开始切换的颜色和格式。

前景色和背景色的代码如下:

         foreground background
black        30         40
red          31         41
green        32         42
yellow       33         43
blue         34         44
magenta      35         45
cyan         36         46
white        37         47

此外,你可以使用这些:

reset             0  (everything back to normal)
bold/bright       1  (often a brighter shade of the same colour)
underline         4
inverse           7  (swap foreground and background colours)
bold/bright off  21
underline off    24
inverse off      27

有关其他不太受广泛支持的代码,请参见维基百科上的表格。


要确定您的终端是否支持颜色序列,请读取TERM环境变量的值。它应该指定所使用的特定终端类型(例如vt100、gnome-terminal、xterm、screen……)。然后在terminfo数据库中查找;检查颜色能力。

试试我的标题这里一个快速和简单的方法来着色文本:Aedi的颜色标题

Escape-Sequence-Color-Header

在Unix中使用c++为输出着色!!

文本属性选项:

ATTRIBUTES_OFF, BOLD, UNDERSCORE, BLINK, REVERSE_VIDEO, CONCEALED

颜色选择:

BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE

格式:

通用格式,在$变量$中包含你想要的值

COLOR_$Foreground_Color$_$Background_Color$
COLOR_$Text_Attribute$_$Foreground_Color$_$Background_Color$
COLOR_NORMAL  // To set color to default

e.g.

COLOR_BLUE_BLACK // Leave Text Attribute Blank if no Text Attribute appied
COLOR_UNDERSCORE_YELLOW_RED
COLOR_NORMAL

用法:

只是使用流的颜色,你想在输出文本和 在输出文本后再次使用以将颜色设置为正常。

cout << COLOR_BLUE_BLACK << "TEXT" << COLOR_NORMAL << endl;
cout << COLOR_BOLD_YELLOW_CYAN << "TEXT" << COLOR_NORMAL << endl;

正如其他人所述,您可以使用转义字符。 你可以使用我的标题,以使它更容易:

#ifndef _COLORS_
#define _COLORS_

/* FOREGROUND */
#define RST  "\x1B[0m"
#define KRED  "\x1B[31m"
#define KGRN  "\x1B[32m"
#define KYEL  "\x1B[33m"
#define KBLU  "\x1B[34m"
#define KMAG  "\x1B[35m"
#define KCYN  "\x1B[36m"
#define KWHT  "\x1B[37m"

#define FRED(x) KRED x RST
#define FGRN(x) KGRN x RST
#define FYEL(x) KYEL x RST
#define FBLU(x) KBLU x RST
#define FMAG(x) KMAG x RST
#define FCYN(x) KCYN x RST
#define FWHT(x) KWHT x RST

#define BOLD(x) "\x1B[1m" x RST
#define UNDL(x) "\x1B[4m" x RST

#endif  /* _COLORS_ */

使用header的宏的一个例子可以是:

#include <iostream>
#include "colors.h"
using namespace std;

int main()
{
    cout << FBLU("I'm blue.") << endl;
    cout << BOLD(FBLU("I'm blue-bold.")) << endl;
    return 0;
}